Thomas p



{No Model.)

T* F. MATTHEWS.

SYRINGE.

Patented Aug. 2, 1887.

INVENTVUIe:

ITN ESSES @PECEICATXN forming yal-t e1r Lettere Pat-em. blc'. dazefi August 2. 1887.

To @ZZ 107mm may concern:

Bef known that LTHUMAS F. MATTHEWS, el'New Vlverlc. in Elie county of New York and. `Biete ofNew York, lmveinvented certain new anal useful lxii} reveiz.ents in Syringes,0f\vbieh. the following is u specification. Y i

'.liis ini/entier; relates te syringes in which lille liquid le be injected is expelled through e.. liiseliarge-inbe by theeoinpression efe. Flexible rubber bulb eemnxnniezrting with the ili$- elnrrge lnlie and with Lne receptacle from wllieli the liquid is drawn.

il. isi the ebjert nl the invention to provide lire diselnirgelniwe of :rsyringe el' this cles?. 5 willi :i section er reservoir forming a parli el' ille conduit through snill lnlw, but ofgrezil-er elzistieil/y than 1:he inbe, said section er reserveir being migraine el' being expanded by lire prrsnre'el' the liquid which is forced tiirnnglx seid tube by tire compression 0l tlielnxlb, and ef eenlrneling v-.slien snelx pressure ceases, :ind liyils eenlnf ier. expelling?. partei Llieliquid .ieenninlnlleil in il, Elms inninmining n. lliselmrge through llie nozzle while the bn b is 5 being; refilled, ne llliit Llie discharge may be inznle prziebienlly eontinnons, the bnll) nml elnflilic reserveir :inning alternately.

.l`i1e invenlien eznisists in the combination, -witli lim discharge-lube 0l' e syringe of blie class allieve described, of en elastic reservoir forming .fr pmi. el' i ille conduit er passage tixrengli lille elle mrgelnbe, but of greater elasticity hun said' tubes@ limi. the reservoir will ne expninlerl by tile liquid being inipelle. c, l-iirengii li-lie tube liy the compression ef die bulb, nml. will eonlmel nml expel the liqni :ieenmnlnl'eli in ill wliile llie bull) is being lilimi.

llie invention also consists in llie combinetinn, with anni. elzLSLie reserveir anni alle diselmrgelnlie te wliieli in lieiengs, el n easing secured. le Suid lube :1nd ineloslng ille reservoir te pretecl the lnler from injury, :1nd le prevenl. it freni being' wrinkled or lient ont of 5 shape, :jill of wliieli i, will new proeee le denerilie.

'Jie :iueenipmrying drawings, forming n ,n'irlg el" 'tliinnpeeilezilieinFignre l represente n.

nille `flew el' alle llisehnrge-tnbe el' n Syringe 50 einiiin'lyine,A my invenl en. Fig. 2 reprr-eenle e llingilinlinzii neelien eflxe naine. l Fig. 3 repreeenlis n perspeelive View, partly in section,

of :i mmllfeelien, Fig. 4 represents a section en line ll`ig. 5 represents a. sectional. View el lane easing, showing its parts held iene friction. Fig. 6 representsa longitudinal 'an el' discharge-tubeliong ing lille renmmir enplie ne lille flexible parl: efirne iii" I represenlnn Seeliounlview elnnotlier merlin ellen. S represents :1 Hille View el a re @gliele Syringe li-.rvng my .iinpreye renin.

The eine infiere el rllbre'nee Sinne inni. in :ill lne lgnres.

in lelie lriwinga A reni-oserais ille bulb ofn syringe linyirig elle usual valve-S :it r :uid z", and provided willi lne -fnllelwtnbe B, snid lnilla bei :nlmzlml :e be emnnrrssed by the inni lente alle linnl nl' fle n nlm' ne nenni.

l e.. rer L: le riieelierge-lynlie of?. syringe, Snizl lr .llyefliex'ible rubber, :1nd

e renervoir.

nl. l here shown the n line rigid nez/,zie b :it the i .ne innen, while in figs. (i ien-r; il n. plied le lille flexible ne nefazle .ni/nin in Figs. l, and reni". or ensinn' l el metal,

mbe iler-ll. l

i v H. ...l

ller nr 2. linfa r. lnirll rn Sialeel le nlnlrrinl, l0 one w .iplul'lllenozzle is :Lilli: l, anni. lie ic-.einer side alle neel; l, te which me rubber willen 5 0l' the dischargetnhe is rilnelieli. lll'iliiin lli@ easing is the elimine reservoir l,wliieii isn spherical or other sliepen elnmnlier .lrnlilwr sni'liciently thin lo enable it in yienl and lie liislenlleil by lille pressure el ille liquid within ii, and eonneeted by rigid eeuilings l li willi lille bip 3 and the neel: Ll, Se llnil', lille nlinnnel er eenllnit 0l' `the llin'izlnirlrgvlelie le dil euLl') niilungli lille ulursbie raser Voir. Il l. n ill lie eeen, llierelbre, limi; when Lize linlb el' izlie nyu-inge is compressed the pi'eannre el' ille liquid fereell thereby through *lle ilieeimrgemiie will llislzend the reservoir e, :wel lflnzl when llie bull: is relenSed and sensei: ,leren lire liqniel the elastic reservoir will reni-i hy renew; el. ils elasticity, und will expel l aeenninlnliion el' liquid therein nnei il: Il; is evin3 n ring Lilie 'nlfril'ellilnc'ixhat ieri, Se lleni. n. conbinueus nininmiiied.

The casing 2 protects the elastic reservoir from external injury and prevents it from heing distended to an inj urions extent. The casieg also prevents the reservoir from being creased or bent and flattened by bending, as it would be liable to be if unsupported.

I prefer to make the casingin two separable Sections, which may be screwed together, as shown in Figs. 2 and 3, or {itted together like the parte ot a box, as shown in Fig. 5.

l'n Figs. 3 and t i have shown the reservoir as corrugated lengthwise, to give it a greater capability for disteusion.

Figs. 6 and 7 show the elastic reservoir applied directly to the elastic portion of the discharge-tube. The reservoir shown in Fig. 6 is spherical in shape, and is made of rubber, which is thinner than that of which the tube is made. The reservoir is in this ease suitably secu rcd to lips or iianges formed on the ends of two sections ofthe rubber tube. The reservoir shown in Fig. 7 is cylindrical in shapc,the body ofthe cylinder being' a tube of comparatively thin rubber cemented to thicker cnd pieces or heads, which are cemented or otherwise' se cured to the sections of the rubber tube.

it is obvious that the reservoirs-shown in Figs. 6 and i' may oe protected by casinos 2, supported by the tube. ln Fig. 3 l have shown a casing in dotted lines,.thc same being made in separable sections, eachv )'novided with a sleeve, S, tit-ting closely upon the discharge tube.

aiu aware that it is not new to inahc thc discharge-tube ofa syringe capable of distensienalongitscntirelongth. It willbcobscrvcd, however, that my clnsticrcscrvoir is very lim ited in length compared with the entire tube, and is therefore out under greater pressure when distcnded than thc tube last above dcscribed, and contiactu more quickly and positiveiy'thun such tube, that the cxlmlsion of lionid bv the contrmfrion of the reservoir is I .f y

more nearly like that caused bythe compression of they bulb. v l i j I am also aware that a water-bag syringe has' had. a compressiblebulb in its discharge-tube to exhaust the air and start a siphonic flow into the bag; but such bulb has not been combined with a. valved bulb 'adapted to be compressed to force the water through the discharge-tube, andV has not been constructed to be dsteuded by pressure ci water within it.

The nozzle having the reservoir and 1casingl may be put on sale as an article of manufacture, to be used with any of the syringes nowin use.

I clai m.- l

1. The combination, in asyriugc,ofthe main bulb, the discharge tube or conduit, an additional elastic reservoir forming a part ofthe said conduit and located at a. point between the main bulb and the discharging cud ofthe conduit, and arigid casing or protector inclosingtbe reservoir, as sct forth.

2. As an iniiiroveuicnt iu syringes, a tube or conduit adapted to conduct liquid from the main bulb of the syringc,aiid provided with an Wil nesscs;

(l. F. lluowN, A. l), liaumsow. 

